<!DOCTYPE html>
<html>
<head>
	<meta charset="utf-8">
	<meta name="viewport" content="width=device-width, initial-scale=1">
	<title></title>
	<style type="text/css">
		*{
			margin: 0;
			padding: 0;
		}
		div{
			width: 100px;
			margin: 50px auto;
			display: flex;
			position:relative ;
/*			animation: move 1s ease 1s infinite;*/
		}
		div>span{
			width: 50px;
			height: 80px;
			background-color: red;
			border-top-left-radius:50%;
			border-top-right-radius:50%;
/*			animation: move 1s linear 1s infinite;*/

		}
		div>span:nth-of-type(1){
			transform: rotate(46deg);
			transform-origin: right bottom;
			animation: move1 1s linear 1s infinite alternate;
		}
		div>span:nth-of-type(2){
			transform: rotate(-46deg);
			transform-origin: left bottom;
			animation: move2 1s linear 1s infinite alternate;
		}
		@keyframes move1{
			0%{
				transform:rotate(46deg) scale(1.0) ;
			}
			25%{
				transform: rotate(46deg) scale(1.1);
			}
			50%{
				transform: rotate(46deg) scale(1.2);
			}
			75%{
				transform: rotate(46deg) scale(1.3);
			}
			100%{
				transform: rotate(46deg) scale(1.4);
			}
		}
		@keyframes move2{
			0%{
				transform:rotate(-46deg) scale(1.0) ;
			}
			25%{
				transform: rotate(-46deg) scale(1.1);
			}
			50%{
				transform: rotate(-46deg) scale(1.2);
			}
			75%{
				transform: rotate(-46deg) scale(1.3);
			}
			100%{
				transform: rotate(-46deg) scale(1.4);
			}
		}
	</style>
</head>
<body>
	<div>
		<span></span>
		<span></span>
	</div>
	<div>
		<span></span>
		<span></span>
	</div>
	<div>
		<span></span>
		<span></span>
	</div>
	<div>
		<span></span>
		<span></span>
	</div>
</body>
</html>